Here’s a story that recruits ancient folklore, Bugs Bunny cartoons from the 1940s, and leading-edge animal behavior science to tell a tale about the deep history of play. It begins with Aesop, the ...

Before turtles are hatched — when they're just tiny embryos inside their eggs — they may be able to influence whether they will become male or female, according to a study in China. And this could ...

Scientists have found that turtle embryos can play a role in determining their own sex, which could help their species guard against climate change. Here's a reminder that NPR News reports on the news ...

In certain turtle species, the temperature of the egg determines whether the offspring is female or male. But now, new research shows that the embryos have some say in their own sexual destiny: they ...